County Boundaries of the United States, 1990
Abstract/Contents
- Abstract
- This polygon shapefile portrays the 1990 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer was created by extracting county polygon features from the individual 1:2,000,000-scale State boundary Digital Line Graph (DLG) files produced by the U.S. Geological Survey. These files were then merged into a single file and the boundaries were modified to what they were in 1990. This is a revised version of the November 2004 map layer. This layer is part of the 1997-2014 edition of the National Atlas of the United States.
- Purpose
- These data are intended for geographic display and analysis at the national level, and for large regional areas. The data should be displayed and analyzed at scales appropriate for 1:2,000,000-scale data. No responsibility is assumed by the National Atlas of the United States in the use of these data.
Description
Type of resource | cartographic, software, multimedia |
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Form | Shapefile |
Extent | 12.283 |
Publisher | Geological Survey (U.S.) |
Publication date | 2005 |
Language | English |
Digital origin | born digital |
Map data | 1:2000000Scale not given. ; EPSG::4269 W 179°8ʹ--E 179°47ʹ18ʺ/N 71°23ʹ53ʺ--N 17°40ʹ29ʺ, Scale not given ; EPSG::4326 |
Creators/Contributors
Creator | Geological Survey (U.S.) |
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Subjects
Subject | Administrative and political divisions |
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Subject | Counties |
Subject | United States |
Subject | Alaska |
Subject | Alabama |
Subject | Arizona |
Subject | Arkansas |
Subject | Colorado |
Subject | Connecticut |
Subject | Delaware |
Subject | Florida |
Subject | Georgia |
Subject | Hawaii |
Subject | Idaho |
Subject | Illinois |
Subject | Indiana |
Subject | Iowa |
Subject | Kansas |
Subject | Kentucky |
Subject | Louisiana |
Subject | Maine |
Subject | Maryland |
Subject | Massachusetts |
Subject | Michigan |
Subject | Minnesota |
Subject | Mississippi |
Subject | Missouri |
Subject | Montana |
Subject | Nebraska |
Subject | Nevada |
Subject | New Hampshire |
Subject | New Jersey |
Subject | New Mexico |
Subject | New York (State) |
Subject | North Carolina |
Subject | North Dakota |
Subject | Ohio |
Subject | Oklahoma |
Subject | Oregon |
Subject | Pennsylvania |
Subject | Rhode Island |
Subject | South Carolina |
Subject | South Dakota |
Subject | Tennessee |
Subject | Texas |
Subject | Utah |
Subject | Vermont |
Subject | Virginia |
Subject | Washington (D.C.) |
Subject | Washington (State) |
Subject | West Virginia |
Subject | Wisconsin |
Subject | Wyoming |
Subject | Puerto Rico |
Subject | United States. Virgin Islands |
Subject | 1990-1980 |
Subject | Boundaries |
Genre | Geospatial data |
Genre | Cartographic dataset |
Bibliographic information
Supplemental information | {"gdaId" : 6065726} |
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Use limitation | None. Acknowledgment of the National Atlas of the United States of America would be appreciated in products derived from these data. |
WGS84 Cartographics | This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection. |
Location | https://purl.stanford.edu/pb817xw6983 |
Access conditions
- Use and reproduction
- This item is in the public domain. There are no restrictions on use.
- Copyright
- This work is in the Public Domain, meaning that it is not subject to copyright.
Preferred citation
- Preferred citation
- U.S. Geological Survey. (2005). County Boundaries of the United States, 1990. USGS. Available at: http://purl.stanford.edu/pb817xw6983
Collection
National atlas of the United States of America, 1997-2014
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